BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Veery In Great Basin

All regionsGreat BasinForest birds

Veery in Great Basin has fallen sharply: down 62% on the route-weighted index since 1970.

-62%Since 1970TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
32Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
56YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Veery has fallen sharply in Great Basin: down 62% on the route-weighted index since 1970.

Veery In Great Basin Population Forecast

If the recent trend holds, Veery in Great Basin is projected to fall about 43% by 2029 — from 0.47 in 2024 to a central estimate of 0.27 (95% range 0.00–0.82). A 5-year backtest shows a typical error of ±45.3%, with 100% of held-out values landing inside the 95% band.

-43%Change by 2029TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.27Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.8295% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±45.3%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Veery in Great Basin is projected to fall about 43% by 2029 — from 0.47 in 2024 to a central estimate of 0.27 (95% range 0.00–0.82). A 5-year backtest shows a typical error of ±45.3%, with 100% of held-out values landing inside the 95% band.19682029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20250.300.000.86
20260.290.000.85
20270.280.000.84
20280.280.000.83
20290.270.000.82

Routes In Great Basin

Routes recording Veery in Great Basin.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
ArdenvoirWASHINGTON191987
TwispWASHINGTON152024
Blewett PassWASHINGTON132024
TonasketWASHINGTON92013
LeavenworthWASHINGTON92024
JoelIDAHO82024
Lake ChelanWASHINGTON82024
WinthropWASHINGTON72022
LeadoreIDAHO32024
NewhalemWASHINGTON32012
WilburWASHINGTON32024
GiffordIDAHO22017
SquirrelIDAHO21979
SpringfieldIDAHO21980
ReardanWASHINGTON22024
RimrockWASHINGTON22024
MazamaWASHINGTON22022
L. WenatcheeWASHINGTON22024
WaitsburgWASHINGTON22004
BakerIDAHO12014
Magic MtnIDAHO11997
AlmoIDAHO11993
ImnahaOREGON11993
JosephOREGON11975
PendletonOREGON12010

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.